2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/226140Analogues of invariant theory's well-known Roberts theorem are proved for ternary forms. We established that covariants, contravariants and mixed concomitants of a ternary form are uniquely determined by their lead coefficients.Classical Invariant theory. 16 pages in Ukrainian, English AbstractAlgebraic Geometry13N15;13A50;13F20Analogue of Roberts theorem for ternary formstext